365 Data Science Q&A Hub

Receive support from your instructors, build positive interactions with fellow data science students, and have fun while advancing in data science. Please be respectful and patient while interacting with others in the 365 Data Science Q&A hub. For more details on the code of etiquette, you should abide by, read our Community Guidelines.

Ask a question
Filter courses
  • Introduction to Tableau
  • The Complete Data Visualization Course with Python, R, Tableau, and Excel
  • Introduction to R Programming
  • Data Preprocessing with NumPy
  • Introduction to Data and Data Science
  • Data Cleaning and Preprocessing with pandas
  • Introduction to Business Analytics
  • Data Analysis with Excel Pivot Tables
  • SQL
  • Credit Risk Modeling in Python
  • Python Programmer Bootcamp
  • SQL + Tableau + Python
  • Introduction to Jupyter
  • Statistics
  • Mathematics
  • Introduction to Excel
  • Probability
  • Starting a Career in Data Science: Project Portfolio, Resume, and Interview Process
  • SQL + Tableau
  • Time Series Analysis with Python
  • Power BI
  • Product Management for AI & Data Science
  • Git and GitHub
  • Deep Learning with TensorFlow 2
  • Customer Analytics in Python
  • Web Scraping and API Fundamentals in Python
  • Introduction to Python
  • Python for Finance
  • Machine Learning in Python
  • Advanced Microsoft Excel
  • Convolutional Neural Networks with TensorFlow in Python
  • Data Strategy
  • Fashion Analytics with Tableau
  • Dates and Times in Python
  • SQL for Data Science Interviews
  • Data Literacy
  • AI Applications for Business Success
  • Linear Algebra and Feature Selection
  • Machine Learning with Naïve Bayes
  • Machine Learning in Excel
  • Machine Learning with Support Vector Machines
  • A/B Testing in Python
  • Machine Learning with Decision Trees and Random Forests
  • Machine Learning with K-Nearest Neighbors
  • Machine Learning with Ridge and Lasso Regression
  • Data-Driven Business Growth
  • Corporate Strategy
  • Marketing Strategy
  • Negotiation
  • Management
  • Persuasion and Influence
  • Excel for Project Management
  • Agile and Scrum Project Management
  • Project Management
  • Blockchain for Business
  • How to Think Like a Data Scientist to Become One
  • Power Query and Data Modeling
  • Introduction to DAX
  • Building Business Reports Using Power BI
  • The Machine Learning Process A-Z
  • Working with Text Files in Python
  • Intermediate Python Programming
  • Advanced SQL
  • The Machine Learning Algorithms A-Z
  • Customer Churn Analysis with SQL and Tableau
  • Machine Learning Deep Dive: Business Applications and Coding Walkthroughs
  • Customer Engagement Analysis with SQL and Tableau
  • Advanced SQL for Data Engineering
  • Communication and Presentation Skills for Analysts and Managers
  • Intro to ChatGPT and Generative AI
  • Data Analysis in PowerBI with ChatGPT
  • Mastering Key Performance Indicators (KPIs)
  • Sign-Up Flow Optimization Analysis with SQL and Tableau
  • Python for Social Media Analytics
  • Intro to NLP for AI
  • Data Analysis with ChatGPT
  • ChatGPT for Data Science
  • Intro to LLMs
  • Growth Analysis with SQL, Python, and Tableau
  • Intro to Data Engineering
  • Statistical Tests in Sales and Marketing
  • Build Chat Applications with OpenAI and LangChain
  • Introduction to Vector Databases with Pinecone
  • Intro to Revenue Analytics
  • Intro to AI
Filter questions by
  • Answered
  • Resolved
Clear all
Order by
  • Posted on
  • Last answered
  • Answers
  • Popularity
Filter courses
  • Introduction to Tableau
  • The Complete Data Visualization Course with Python, R, Tableau, and Excel
  • Introduction to R Programming
  • Data Preprocessing with NumPy
  • Introduction to Data and Data Science
  • Data Cleaning and Preprocessing with pandas
  • Introduction to Business Analytics
  • Data Analysis with Excel Pivot Tables
  • SQL
  • Credit Risk Modeling in Python
  • Python Programmer Bootcamp
  • SQL + Tableau + Python
  • Introduction to Jupyter
  • Statistics
  • Mathematics
  • Introduction to Excel
  • Probability
  • Starting a Career in Data Science: Project Portfolio, Resume, and Interview Process
  • SQL + Tableau
  • Time Series Analysis with Python
  • Power BI
  • Product Management for AI & Data Science
  • Git and GitHub
  • Deep Learning with TensorFlow 2
  • Customer Analytics in Python
  • Web Scraping and API Fundamentals in Python
  • Introduction to Python
  • Python for Finance
  • Machine Learning in Python
  • Advanced Microsoft Excel
  • Convolutional Neural Networks with TensorFlow in Python
  • Data Strategy
  • Fashion Analytics with Tableau
  • Dates and Times in Python
  • SQL for Data Science Interviews
  • Data Literacy
  • AI Applications for Business Success
  • Linear Algebra and Feature Selection
  • Machine Learning with Naïve Bayes
  • Machine Learning in Excel
  • Machine Learning with Support Vector Machines
  • A/B Testing in Python
  • Machine Learning with Decision Trees and Random Forests
  • Machine Learning with K-Nearest Neighbors
  • Machine Learning with Ridge and Lasso Regression
  • Data-Driven Business Growth
  • Corporate Strategy
  • Marketing Strategy
  • Negotiation
  • Management
  • Persuasion and Influence
  • Excel for Project Management
  • Agile and Scrum Project Management
  • Project Management
  • Blockchain for Business
  • How to Think Like a Data Scientist to Become One
  • Power Query and Data Modeling
  • Introduction to DAX
  • Building Business Reports Using Power BI
  • The Machine Learning Process A-Z
  • Working with Text Files in Python
  • Intermediate Python Programming
  • Advanced SQL
  • The Machine Learning Algorithms A-Z
  • Customer Churn Analysis with SQL and Tableau
  • Machine Learning Deep Dive: Business Applications and Coding Walkthroughs
  • Customer Engagement Analysis with SQL and Tableau
  • Advanced SQL for Data Engineering
  • Communication and Presentation Skills for Analysts and Managers
  • Intro to ChatGPT and Generative AI
  • Data Analysis in PowerBI with ChatGPT
  • Mastering Key Performance Indicators (KPIs)
  • Sign-Up Flow Optimization Analysis with SQL and Tableau
  • Python for Social Media Analytics
  • Intro to NLP for AI
  • Data Analysis with ChatGPT
  • ChatGPT for Data Science
  • Intro to LLMs
  • Growth Analysis with SQL, Python, and Tableau
  • Intro to Data Engineering
  • Statistical Tests in Sales and Marketing
  • Build Chat Applications with OpenAI and LangChain
  • Introduction to Vector Databases with Pinecone
  • Intro to Revenue Analytics
  • Intro to AI
Filter questions by
  • Answered
  • Resolved
Clear all
8328 results
Izzatilla Rakhmatullaev
0
3
Resolved: Cannot change column with default
SQL
Last answered: Oct 25th 2023
590 views
Fatma Amer
0
2
exported image.
I exported the plot as an image and it is plank white with no chart on it.
The Complete Data Visualization Course with Python, R, Tableau, and Excel
Last answered: Oct 18th 2023
525 views
Kayode Shedowo
0
2
Producing bar chat in R
The graph for the bar chat i am try to produce is not appearing in the plot tab
The Complete Data Visualization Course with Python, R, Tableau, and Excel
Last answered: Oct 23rd 2023
539 views
ROHIT KUMAR YADAV
0
1
share the steps calculate the "net sales" and "cost of good sold" can you please share the formula
share the steps calculate the "net sales" and "cost of good sold" can you please share the formula   i am...
The Complete Data Visualization Course with Python, R, Tableau, and Excel
Last answered: Oct 12th 2023
512 views
Ayman Hassan
Super learner
This user is a Super Learner. To become a Super Learner, you need to reach Level 8.
1
0
Who is the narrator?
Is this different from the videos by Valentina? Who is the narrator?
Marketing Strategy
694 views
Joel Rehm
0
2
Resolved: Streak taken away
My streak has been canceled today (10/10/23). Yet I am finishing my 30 minutes for 10/10/23 at 10:07pm. Once I...
Last answered: Oct 12th 2023
497 views
Antonio da Silva
0
1
Resolved: Normal distribution
If I have a T~N(45.1, 19.0) and a mean 43.4 in a sample n=50 how can I calculate...
Statistics
Last answered: Oct 12th 2023
910 views
Sayed Ibrahim
Super learner
This user is a Super Learner. To become a Super Learner, you need to reach Level 8.
0
3
Resolved: I don't get the rationale of some concepts and need some clarification
In the 2nd lecture of the course it's said that the probability of two independent events occurring at the same time...
Probability
Last answered: Oct 16th 2023
697 views
CHUN HSIEN TSENG
0
1
Course Exam Question 15
I would like to know that, why the answer is not the first one, since I can create an area chart by using only 1...
The Complete Data Visualization Course with Python, R, Tableau, and Excel
Last answered: Oct 18th 2023
473 views
CHUN HSIEN TSENG
0
1
Course Exam Question 18
Dear 365datascience, After reviewing the explaination in question 18, I'm still having some question about this...
The Complete Data Visualization Course with Python, R, Tableau, and Excel
Last answered: Oct 18th 2023
523 views
Tanika
2
1
Query regarding Q2
The solution provided does return any contracts that are signed after 4 years of hiredate and before 5 years. This is...
Advanced SQL
Last answered: Nov 10th 2023
512 views
Alireza
0
1
Resolved: No Multicollinearity and No endogeneity!
Hi. As you explained in the 'No endogeneity' when we don't explain (include) a variable, it goes to the error term...
Machine Learning in Python
Last answered: Oct 10th 2023
812 views
Salma
0
0
Course exam-final case
How can I find a good explanation to the final case, starting Q21, I really don't get it at all. Also looking that...
Mathematics
453 views
Diana Schoenberger
0
2
Misspelling in course notes?
Hi, I think there's a tiny error in your course notes on the page 80. For both correlation coefficients (-1 & +1)...
Data Literacy
Last answered: Oct 10th 2023
417 views
Mohamed Abdul-Aziz Eisa
0
2
Resolved: Exercise for clustering categorical data need to remove index column ........ (I NEED SOLUTION)
I need solve for this i try every thing what problem with this data first i try >> data =...
Machine Learning in Python
Last answered: Oct 10th 2023
688 views

popular questions

Omar R. Valencia García
28
4
The line reg.predict(1740) does not work anymore
Rafael Rodrigues de Siqueira
23
6
The ROLLBACK not working according to step-by-step class
E E
13
1
I didn't quite understand the nuance from 3:48 till the end
Toluwase Olukayode
12
4
not showing as completed even though I have complete the course. Please help me fix it
Gabriel de Jesus Patiño Pino
12
0
The answer to the third question is wrong (Practical exam 2: Discrete Distributions)
Davide Sanchioni
11
3
Sixth question of the practice exam
Christine Li
11
9
Resolved: My comments on this course
Adetunji Fasiku
11
1
The Second Question's Confusing Ability
Anower Hossain
10
1
course question
Ali Safaei
9
1
Using z statistics instead of t statistics
Mohamed Abdelazim Mohamed Elsrougy
9
2
Resolved: Downloading Video Materials
Abdulmalik Alkhamis
9
1
This is inconsistent with the quiz
Luiz
9
1
Suggestion: change the robot and arrows analogy
Abdelrahman El-kattan
8
5
the conclusion?
Zachary Roblyer
8
3
Resolved: Feedback for practice exam